Graphite Marking Crayons Choose a variant Choose a variant No. 31 - 12 Crayons non-papered in a box No. 310 - 12 Crayons each with plastic coat in a box Choose a variant Graphite Marking Crayons size approx. 100 x 11 mm hexagonal-nonpapered or with plastic coat Best and pure Graphite. Weather-proof. For resistant marking of dry and wet wood and other rough surfaces. Reviews There are yet no reviews for this product.